Stoptech 128.33039R Disc Brake Rotor - Front Right

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.33039R is engineered for Audi and Volkswagen vehicles, including models like the A4, A6, Passat, and their Quattro variants. Designed to enhance braking performance, this rotor features a vented and cross-drilled surface for improved heat dissipation and consistent stopping power.

• Cross-drilled surface for enhanced heat dissipation
• Vented rotor design with straight vane style
• Coated vented hat finish for corrosion resistance
• Floating disc mounting for improved rotor alignment
• Compatible with Audi and Volkswagen models including A4, A6, Passat, and Quattro versions
• Disc outer diameter: 288 mm (11.339 inches)
• Nominal thickness: 25.0 mm (0.980 inches)
• Discard thickness: 23.0 mm (0.906 inches)
• 5 lug holes with 112 mm bolt circle diameter
• Weight approximately 7.95 kg (17.5 lbs)

Detailed Product Description

The StopTech Sport Cross-Drilled Disc Brake Rotors are designed to meet the demands of performance-oriented driving while maintaining OEM fitment standards. The cross-drilled surface pattern helps to reduce brake fade by allowing heat and gases to escape more efficiently during braking. The vented rotor design with straight vanes promotes airflow through the rotor, further aiding in temperature control. The coated vented hat finish provides additional protection against corrosion, extending the rotor's service life. This rotor uses a floating disc mounting system, which helps maintain proper alignment and reduces the risk of warping under heavy braking conditions.

With a precise outer diameter of 288 mm and a nominal thickness of 25 mm, this rotor is engineered to fit specific Audi and Volkswagen models, including the A4, A6, Passat, and their Quattro all-wheel-drive variants. The 5-lug hole pattern with a 112 mm bolt circle diameter ensures compatibility with factory hubs. The StopTech Sport Cross-Drilled Disc Brake Rotor part number 128.33039R is a direct replacement part designed to maintain braking performance and safety.

Applications and Problem Solving

• Reduces brake fade during aggressive or repeated braking
• Improves heat dissipation to prevent rotor warping
• Enhances braking consistency in Audi A4, A6, Passat, and Quattro models
• Addresses corrosion issues with coated vented hat finish
• Maintains proper rotor alignment with floating disc mounting

Installation Notes and Tips

Ensure the rotor is installed on compatible Audi or Volkswagen models as specified. Verify the bolt pattern and rotor dimensions before installation. Since bearings and ABS tone rings are not included, reuse existing components or source separately if needed. Proper torque specifications should be followed to avoid rotor damage or misalignment. It is recommended to inspect brake pads and calipers during rotor replacement for optimal braking performance.

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The coated finish and vented design contribute to durability and long service life. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed quality assurance. Always consult product documentation or the manufacturer for warranty terms related to part number 128.33039R.